When you decide to develop new Plugins (DPUs), which will be available to public, you have to decide where the DPUs should published.
Basically you have two options:
1) Contribute to UnifiedViews/Plugins repository: https://github.com/UnifiedViews/Plugins
2) Create your own repository (e.g. on github)
If your DPU is project specific and it does not make sense for most of the users, you should go for option 2).
If you prepare DPU which may be used in general, which is usable for others, in other projects, you may decide to go for 1) or 2). If you decide to go for 1), you have to obey Guidelines for Contributors.
Whenever you create new repository of DPUs you are using (approach 2), please mark such repository to the List of Repositories with Plugins